The present invention relates to a glass, in particular a glass for joining glass panes in order to produce vacuum insulated glasses at processing temperatures of 450 C., to the corresponding composite glass, and to the corresponding glass paste. The present invention further relates to a vacuum insulated glass produced by means of the glass paste according to the invention, to the production process thereof, and to the use of the glass according to the invention or of the composite glass and of the glass paste. The glass according to the invention is characterized in that said glass comprises the following components in wt %: TeO.sub.2V.sub.2O.sub.5 glass in the range of 60-100 wt %, high temperature glasses, selected from the group consisting of lead glass, bismuth glass, zinc glass, barium glass, calcium glass, alkali silicate glass, in the range of 0-20 wt %, and reactive oxides, selected from the group consisting of Al.sub.2O.sub.3, Y.sub.2O.sub.3, La.sub.2O.sub.3, ZnO, Bi.sub.2O.sub.3, SiO.sub.2, ZrO.sub.2, zircon, Nb.sub.2O.sub.5, V.sub.2O.sub.5, TeO.sub.2, CeO.sub.2, SnO, SnO.sub.2, FeO, MnO, Cr.sub.2O.sub.3, CoO, oxide pigments, or a combination thereof, in the range of 0-20 wt %.

A preparation method includes: pressing and forming a ceramic base material to obtain a green body of a ceramic plate; applying a ground glaze on the surface of the green body to cover the base color and defects of the green body; applying a cover glaze on the surface of the green body after applying the ground glaze, wherein the cover glaze contains 0.2 wt % to 0.7 wt % of coloring metal oxide to make the coloring bright; roller-printing patterns on the surface of the green body after applying the cover glaze to produce a flowing cloud effect; and drying the green body with the roller-printed patterns and firing in a kiln. The present invention uses roller printing to print the patterns of cloud effect on the surface of the cover glaze, which form a sharp contrast with the color of the cover glaze, producing a better visually distinct effect.

An enamel composition, a method for preparing an enamel composition, and a cooking appliance are provided. The enamel composition may include 15 to 50 wt % of silicon dioxide (SiO.sub.2); 1 to 10 wt % of boron oxide (B.sub.2O.sub.3); 10 to 20 wt % of at least one of lithium oxide (Li.sub.2O), sodium oxide (Na.sub.2O), or potassium oxide (K.sub.2O); 1 to 5 wt % of sodium fluoride (NaF); 1 to 10 wt % of zinc oxide (ZnO); and 20 to 50 wt % of at least one of titanium dioxide (TiO.sub.2), molybdenum oxide (MoO.sub.3), bismuth oxide (Bi.sub.2O.sub.3), cerium dioxide (CeO.sub.2), manganese dioxide (MnO.sub.2), or Iron oxide (Fe.sub.2O.sub.3), which provides an enamel composition with a reduced cleaning time, and facilitates cleaning without soaking in water.

The present invention provides a ceramic powder, in which -eucryptite or a -quartz solid solution is precipitated as a main crystal phase, and which includes TiO.sub.2 and/or ZrO.sub.2.

A composite powder of the present invention includes a glass powder and a ceramic powder, wherein a content of the glass powder is from 30 vol % to 60 vol %, wherein a content of the ceramic powder is from 40 vol % to 70 vol %, wherein the glass powder includes as a glass composition, in terms of mass %, 10% to 30% of SiO.sub.2, more than 20% to 40% of B.sub.2O.sub.3, 20% to 40% of SrO+BaO, 0% to 10% of Al.sub.2O.sub.3, and 0% to 15% of ZnO, and wherein the composite powder is used for a light reflective substrate.

A composite powder of the present invention includes a glass powder and a ceramic powder, wherein a content of the glass powder is from 30 vol % to 60 vol %, wherein a content of the ceramic powder is from 40 vol % to 70 vol %, wherein the glass powder includes as a glass composition, in terms of mass %, 10% to 30% of SiO.sub.2, more than 20% to 40% of B.sub.2O.sub.3, 20% to 40% of SrO+BaO, 0% to 10% of Al.sub.2O.sub.3, and 0% to 15% of ZnO, and wherein the composite powder is used for a light reflective substrate.

The present invention aims at providing a lead-free glass composition that can be soften and flowed at a firing temperature that is equal to or lower than that of conventional low melting point lead glass. Furthermore, the present invention aims at providing a lead-free glass composition having fine thermal stability and fine chemical stability in addition to that property. The lead-free glass composition according to the present invention is characterized by comprising at least Ag.sub.2O, V.sub.2O.sub.5 and TeO.sub.2 when the components are represented by oxides, wherein the total content ratio of Ag.sub.2O, V.sub.2O.sub.5 and TeO.sub.2 is 75 mass % or more. Preferably, the lead-free glass composition comprises 10 to 60 mass % of Ag.sub.2O, 5 to 65 mass % of V.sub.2O.sub.5, and 15 to 50 mass % of TeO.sub.2.

The present invention aims at providing a lead-free glass composition that can be soften and flowed at a firing temperature that is equal to or lower than that of conventional low melting point lead glass. Furthermore, the present invention aims at providing a lead-free glass composition having fine thermal stability and fine chemical stability in addition to that property. The lead-free glass composition according to the present invention is characterized by comprising at least Ag.sub.2O, V.sub.2O.sub.5 and TeO.sub.2 when the components are represented by oxides, wherein the total content ratio of Ag.sub.2O, V.sub.2O.sub.5 and TeO.sub.2 is 75 mass % or more. Preferably, the lead-free glass composition comprises 10 to 60 mass % of Ag.sub.2O, 5 to 65 mass % of V.sub.2O.sub.5, and 15 to 50 mass % of TeO.sub.2.

A biocidal additive package comprises at least one metal or metal containing compound selected from the group consisting of Cu.sub.2O, Cu(OH).sub.2, Cu, CuO.sub.3, Cu.sub.2O.sub.3, and a combination thereof, and at least one non-copper metal or non-copper containing metal compound. Non-limiting examples of non-copper metal and non-copper containing metal compounds are Ag, Ag.sub.2O, Bi, Bi.sub.2O.sub.3, Zn, ZnO, or a combination thereof. A biocidal ceramic glaze layer and an article comprising a biocidal ceramic glaze layer are provided. Also provided is a method of affixing a biocidal ceramic glaze to a substrate.

A biocidal additive package comprises at least one metal or metal containing compound selected from the group consisting of Cu.sub.2O, Cu(OH).sub.2, Cu, CuO.sub.3, Cu.sub.2O.sub.3, and a combination thereof, and at least one non-copper metal or non-copper containing metal compound. Non-limiting examples of non-copper metal and non-copper containing metal compounds are Ag, Ag.sub.2O, Bi, Bi.sub.2O.sub.3, Zn, ZnO, or a combination thereof. A biocidal ceramic glaze layer and an article comprising a biocidal ceramic glaze layer are provided. Also provided is a method of affixing a biocidal ceramic glaze to a substrate.